In 1977, he argued in a book about gender roles that the role relationship of men and women is theologically analogous to the subordination of the Son to the Father in the Trinity.[4] Australian theologian Kevin Giles has more recently responded that complementarians have "reinvented" the doctrine of the Trinity to support their views of men and women, suggesting that some complementarians have adopted a heretical view of the Trinity similar to Arianism.[5] Knight released a response to "evangelical feminists" in a 2009 book.[6] Knight's contributions to the complementarian view of the role relationship of men and women, and especially as it is applied to the issue of the ordination of women to the ministry, have greatly influenced the founding of the Council on Biblical Manhood and Womanhood, where he continues to serve as a council member.

——— (1969). The Faithful Sayings in the Pastoral Letters. An International Library of Philosophy and Theology. Biblical and theological studies (1st general ed.). Nutley, NJ: Presbyterian and Reformed Publishing Company. OCLC808562694.

——— (1973). The Theological Significance of Kerygmatic Diversity in the Marcan Interpretation of the Death of Jesus (Diss. (unknown)). Louisville, KY: Southern Baptist Theological Seminary. OCLC315487563.

——— (1975). The Role Relation of Man and Woman and the Teaching/Ruling Functions in the Church. St. Louis, MO: Knight. OCLC3337724.